Ghislaine Alexander

She had been a fashion journalist and had modelled for women's magazines such as Vogue and Women's Illustrated. Alexander was also a hostess for the major personalities of the time. Among those attending her parties were the King of Jordan, Ian Fleming, Douglas Fairbanks Jr, David Niven, Charles Addams and members of the British Royal Family. Likewise, no "chic" party would be complete without her.

Alexander had close connections to the United States. She spent much of her youth in Palm Beach, Florida, where her parents, Lord and Lady Kemsley, had a home. Then as Lady Foley she resided in Beverly Hills. Alexander was a regular visitor to New York.

So she was a journalist, a model and a socialite. Hosted parties with Royalty, the rich, the famous. Had links to Florida, Hollywood and New York. She's ticking all the boxes of being a madame / handler type.

As an aside, Ghislaine is an old French name meaning "Pledge"